Xorkoth
Bluelight Crew
I had a roommate like this. He told me how in the late 1960s or very early 1970s when he was in college he and a small group of his friends all took LSD. He did not see any visuals or have a real trip or psychedelic experience like everyone else did, and said it was more mental and physically stimulating. It was not fake acid, or super low dose LSD. He tried it again taking two or three doses of LSD and it was the same, no visuals, and no trip. He just stuck to smoking Hawaiian marijuana, and he took Ayahuasca once decades later in a low dose in a ceremony, and said he became telepathic with the other people who had also taken the yagé or Ayshyasca but again no visuals.
I couldn't trip from LSD for many years, which was weird because all other psychedelics I could trip hard from at normal doses. In fact my first ever trip was with just 1.75 grams of mushrooms and it was a peak, +4, life-changing experience. But with LSD, I tied many times, took 2-3 times as much as my friends of the same stuff, and I never got more than threshold effects. I even took 3 of the famed Hofmann anniversary blotters, almost nothing. Then finally, 10 years into my tripping "career" (actually no, 13 years into it), I took 5 hits of strong acid at a festival, and finally broke through to an actual trip. After that, I noticed my tolerance to LSD started going steadily down, until these days I can get a nice trip and visuals off of a half of an average hit. Very strange progression, no idea how it could even be that someone could be perfectly able to trip on every other type of psychedelic but not LSD.
But the OP isn't talking about not being able to trip, just that they don't get much in the way of visuals. Some people just aren't very visual trippers, I think. I have never had the level of visuals that many people describe, and visuals have never been a very important part of the experience, for me (though they're really cool). Except for a few drugs, like DMT of course, that's overwhelmingly visual. And some RCs are highly visual for me. But neither LSD nor mushrooms have ever been super visual for me.